Winder bobbin



May 17, 1949.

G; A. CARLSON WINDER BOBBIN Filed Feb. 20, 1947 Patented May 17, 1949 UNITED STATES OFFICE WINDER BOBBIN tion of Illinois Application February 20, 1947, Serial No. 729,815

1 Claim.

This invention relates to a winder bobbin. It is particularly useful as a bobbin upon which yarn and the like may be wound and which may be used for making argyle socks, sweaters, etc.

An object of the invention is to provide a winder bobbin of novel construction upon which yarn and other material may be wound with facility and without causing a bunching of the yarn. Yet another object is to provide a bobbin of flat design with means for receiving yarn in such a manner as to prevent bunching thereof while, at the same time, providing means for facilitating the winding of the yarn into position. Other specific objects and advantages will appear as the specification proceeds.

The invention is illustrated, in a preferred embodiment, by the accompanying drawing, in which- Figure 1 is a perspective View of a winder bobbin structure embodying my invention and containing yarn wound thereon; Fig. 2, a view similar to Fig. 1 but showing the yarn removed; Fig. 3, a top plan view; and Fig. 4, a longitudinal sectional view, the section being taken as indicated at line 4 of Fig. 3.

In the illustration given, Ill designates a bobbin body of fiat sheet material having a half-moon segment cut away at I I and having the end of the sheet adjacent the recess II provided with concave or inwardly turned walls I2. A slit I3 establishes communication between the recess provided by the inclined walls I2 and the recess II.

The inner edge of the recess II provides a substantially straight line I4.

The opposite end of the bobbin body It is also K outwardly extending arms I5 and I6. Between the inner ends of arms I5 and I6 there is a substantially straight edge I? corresponding to the straight line I4 adjacent recess II.

I find that the half-moon-like recess II, with its straight wall I4 cooperating with the straight wall I! of the opposite recess, is particularly useful in a device of this sort because the curved inner walls I8, bounding recess II, aid in guiding the yarn toward either side along the straight edge I4. In the winding operation, when the yarn is drawn through the slit I3, it may be drawn laterally in either direction to cause the yarn to lie adjacent the selected side portion of the yarn receiving edge I4.

In the operation of the device, the winding of the yarn upon the bobbin provided by the straight lines I4 and I1 is facilitated with respect to the side I4 by the inwardly inclined walls I2 recessed to provide the which direct the thread toward the slit I3. The yarn, as indicated by the numeral I9, is caused to be wound evenly upon the bobbin because of the two straight edges I4 and II, the curved walls I8 of the recess II aiding in the guiding of the yarn toward either selected side. Instead of the yarn bunching toward the center of the surfaces I4 and I1, I find that it tends to spread along the straight lines I4 and I1 and, in the subsequent use of the yarn upon the bobbin in the making of argyle socks, sweaters, etc., the yarn unwinds readily without becoming caught between adjacent yarn threads.

The new structure is handled with great facility. On one end the recess is opened with the guide arms I5 and I6 extending rearwardly, while at the other end, which is closed to confine yarn upon the bobbin, the curved resilient walls on either side of the slit permit a substantially automatic opening of the slit as the yarn slips from the broad end of the body along the inclined walls I2 through the slit I3 and then laterally in either direction toward the wall I4.

The winder bobbin may be formed from a sheet of plastic material by cutting or stamping the same therefrom. For example, the bobbins may be struck from a sheet of plastic, casein, Celluloid, metal, cardboard, fiberboard, and the like. The device is preferably of substantially uniform thickness throughout and is preferably in the thin form indicated in the drawing.

In the structure described, there are in effect two pairs of arms, one pair at each end of the bobbin structure. The arms I5 and I6 provide an open recess between them and have their inner surfaces tapering rearwardly and outwardly. At the opposite end of the bobbin body, there are in effect two arms extending forwardly and then inwardly toward each other, meeting at the slit I3. These arms provide the closed recess II. By reason of the resiliency of the plastic material from which the bobbin is made, the forwardextending arms flex readily adjacent the slit I3 to allow the inward movement of the yarn. Instead of having the arms meet, as indicated, at the slit IS, the arms may be spaced apart providing an opening therebetween.

While in the foregoing description, I have set forth one structure in great detail to illustrate one modification of the invention, it will be understood that such details may be varied widely by those skilled in the art without departing from the spirit of my invention.

I claim:

A winder bobbin, comprising a sheet body of substantially uniform thickness in cross-section throughout, providing a core for the receiving and Winding of thread, a pair of arms at one end thereof extending outwardly to provide a winding recess therebetween, said body providing a straight wall between said pair of arms, a pair of arms extending outwardly and toward each other from an opposite end of said core to provide therebetween a closed winding recess, said second pair of arms extending outwardly and then inwardly along an inclination toward each other, the outer edges of said second pair of arms forming a V-shaped thread-guiding surface with the point of the V at the meeting surfaces of said last-mentioned arms and inwardly directed toward said closed recess, the recess provided by REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,058,925 Toegel Apr. 15, 1913 2,371,756 Gomberg Mar. 20, 1945 

